Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

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1.
Raster

1:100,000 Digital Raster Graphics for Delaware

2000. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

2.
Raster

1:100,000 Digital Raster Graphics for Maryland

2000. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

3.
Raster

1:100,000 Digital Raster Graphics for Virginia

2000. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

4.
Raster

1:100,000 Digital Raster Graphics for West Virginia

2000. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

5.
Raster

1:24,000 - 7.5 minute digital elevation models (DEM) for the District of Columbia (30 meter)

2000. U.S. Geological Survey. Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard...

6.
Raster

1:24,000 - 7.5 minute digital elevation models (DEM) for Virginia (30 meter)

2000. U.S. Geological Survey. Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard...

7.
Raster

1:24,000 - 7.5 minute Digital Raster Graphics for Maryland

2000. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

8.
Raster

1:24,000 - 7.5 minute Digital Raster Graphics for New Jersey

2000. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

9.
Raster

1:24,000 - 7.5 minute Digital Raster Graphics for the District of Columbia

2000. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

10.
Raster

1:24,000 - 7.5 minute Digital Raster Graphics for West Virginia

2000. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

11.
Raster

1:24,000 -7.5 minute digital elevation models (DEM) for West Virginia (30 meter)

2000. U.S. Geological Survey. Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard...

12.
Raster

1:250,000 Digital Raster Graphics for Delaware

2000. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

13.
Raster

1:250,000 Digital Raster Graphics for Maryland

2000. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

14.
Raster

1:250,000 Digital Raster Graphics for Virginia

2000. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

15.
Raster

1:250,000 Digital Raster Graphics for West Virginia

2000. U.S. Geological Survey. A Digital Raster Graphic (DRG) is a raster image of a scanned USGS topographic or planimetric map including the collar information, georeferenced t...

16.
1:250k Digital Raster Graphic - Collars Removed: Minnesota

1:250k Digital Raster Graphic - Collars Removed: Minnesota

1998. U.S. Geological Survey and Minnesota DNR. A digital raster graphic (DRG) is a scanned image of an U.S. Geological Survey (USGS) standard series topographic map, including all map collar inf...

17.
Aerial Imagery: Hennepin County, Minnesota, 1940

Aerial Imagery: Hennepin County, Minnesota, 1940

1940. Hennepin County Geographic Information Systems. Rectified black and white aerial imagery of portions of Hennepin County captured during the summer of 1940.

18.
Aerial Imagery: Hennepin County, Minnesota, 1953

Aerial Imagery: Hennepin County, Minnesota, 1953

1953. Hennepin County Geographic Information Systems. Rectified black and white aerial imagery of Hennepin County captured during the fall of 1953.

19.
Aerial Imagery: Hennepin County, Minnesota, 1957

Aerial Imagery: Hennepin County, Minnesota, 1957

1957. Hennepin County Geographic Information Systems. Rectified black and white aerial imagery of Hennepin County captured during the spring of 1957.

20.
Aerial Imagery: Hennepin County, Minnesota, 1964

Aerial Imagery: Hennepin County, Minnesota, 1964

1964. Hennepin County Geographic Information Systems. Rectified black and white aerial imagery of Hennepin County captured during the fall of 1964.

21.
Aerial Imagery: Hennepin County, Minnesota, 1969

Aerial Imagery: Hennepin County, Minnesota, 1969

1969. Hennepin County Geographic Information Systems. Rectified black and white aerial imagery of Hennepin County from 1969.

22.
Aerial Imagery: Hennepin County, Minnesota, 1988

Aerial Imagery: Hennepin County, Minnesota, 1988

1988. Hennepin County Geographic Information Systems. Rectified black and white aerial imagery of the City of Minneapolis captured during the spring of 1988.

23.
Aerial Imagery: Hennepin County, Minnesota, 1989

Aerial Imagery: Hennepin County, Minnesota, 1989

1989. Hennepin County Geographic Information Systems. Rectified black and white aerial imagery of western Hennepin County captured during the spring of 1989.

24.
Aerial Imagery: Hennepin County, Minnesota, 2000

Aerial Imagery: Hennepin County, Minnesota, 2000

2000. Hennepin County Geographic Information Systems. True color aerial orthophotography of Hennepin County captured during the spring of 2000.

25.
Aerial Imagery: Hennepin County, Minnesota, 2002

Aerial Imagery: Hennepin County, Minnesota, 2002

2002. Hennepin County Geographic Information Systems. True color aerial orthophotography of Hennepin County captured during the spring of 2002.

26.
Aerial Imagery: Hennepin County, Minnesota, 2004

Aerial Imagery: Hennepin County, Minnesota, 2004

2004. Hennepin County Geographic Information Systems. True color aerial orthophotography of Hennepin County captured during the spring of 2004.

27.
Aerial Imagery: Hennepin County, Minnesota, 2005

Aerial Imagery: Hennepin County, Minnesota, 2005

2005. Hennepin County Geographic Information Systems. True color aerial orthophotography of Hennepin County captured in 2005 by the USDA Farm Service Agency.

28.
Aerial Imagery: Hennepin County, Minnesota, 2006

Aerial Imagery: Hennepin County, Minnesota, 2006

2006. Hennepin County Geographic Information Systems. True color aerial orthophotography of Hennepin County captured during the spring of 2006.

29.
Aerial Imagery: Hennepin County, Minnesota, 2009

Aerial Imagery: Hennepin County, Minnesota, 2009

2009. Hennepin County Geographic Information Systems. True color aerial orthophotography of Hennepin County captured during the spring of 2009.

30.
Aerial Imagery: Hennepin County, Minnesota, 2012

Aerial Imagery: Hennepin County, Minnesota, 2012

2012. Hennepin County Geographic Information Systems. True color aerial orthophotography of Hennepin County captured during the spring of 2012.

31.
Aerial Imagery: Hennepin County, Minnesota, 2015

Aerial Imagery: Hennepin County, Minnesota, 2015

2015. Hennepin County Geographic Information Systems. True color aerial orthophotography of Hennepin County captured during the spring of 2015.

32.
Aerial Imagery: Sherburne County, Minnesota, 2014

Aerial Imagery: Sherburne County, Minnesota, 2014

2014. Sherburne County, Minnesota. Aerial imagery obtained in the spring of 2014.

33.
Aerial Imagery: Sherburne County, Minnesota, 2015

Aerial Imagery: Sherburne County, Minnesota, 2015

2015. Sherburne County, Minnesota. Digital Color orthophotography covering Sherburne County, Minnesota.

34.
Vector Created with Sketch.

Aerial Imagery: Washington County, Minnesota, 1945

Washington County Public Works. georeferenced 1945 aerials.

35.
Aerial Photo Counties: Iowa, 2016

Aerial Photo Counties: Iowa, 2016

2016. These county-wide datasets have been up-sampled to a one-meter-resolution raster, in jp2 format.

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Raster
37.
Raster

Aerial Photography 1996: Philadephia, Pennsylvania

1996. Philadelphia aerial photography.

38.
Raster
39.
Raster

Aerial Photography 2000: Philadephia, Pennsylvania

2000. Philadelphia aerial photography.

40.
Raster
41.
Raster

Aerial Photography 2004: Philadephia, Pennsylvania

2004. Philadelphia aerial photography.

42.
Raster
43.
Raster

Aerial Photography 2005: Philadephia, Pennsylvania

2005. Philadelphia aerial photography.

44.
Raster
45.
Raster

Aerial Photography 2008: Philadephia, Pennsylvania

2008. Philadelphia aerial photography.

46.
Raster
47.
Raster

Aerial Photography 2009: Philadephia, Pennsylvania

2009. Philadelphia aerial photography.

48.
Raster
49.
Raster

Aerial Photography 2010: Philadephia, Pennsylvania

2010. Philadelphia aerial photography.

50.